Electrical Transformers News

Sunday, 2 October 2016

Transformers are
expensive products that need to be protected. Manufacturers of distribution
transformers India need to provide proper maintenance care to the transformers and The power transformer protection is realized with two distinct types of
devices, one is the measuring device that measures the electrical quantities
that affect the transformer through instrument transformers. Other is the
device that indicates the status of the physical quantities.

We will discuss
top protection devices used by manufacturing units for transformers.

•Buchholz (Gas) Relay

•Oil level Monitor Device

•Pressure Relay

•Winding Thermometer

Buchholz (Gas) Relay – This equipment is a mechanical fault detector
used by manufacturers to determine electrical faults in oil-filled transformers.
The Buchholz (gas) relay is placed within the pipe between the main tank and
the oil conservator in transformer. The conservator pipe has to be inclined
slightly for reliable operation.

This equipment
normally has a pivoted float and a pivoted vane. Both the float and the vane
carry different mercury switches. The casing is filled with oil and the
switches are open.

Pressure Relay:

Most power
transformers with an on-tank-type tap changer are equipped with a separate tap
changer oil compartment for pressure protection. This protection determines a
sudden rate-of-increase of pressure inside the oil enclosure of the tap
changer.

When the pressure
in front of the piston increases the spring counter force, the piston will move
and operate the switching contacts.

Frangible disk is
the simplest form of pressure relief device used by manufacturers. The surge of
oil caused by a severe internal fault bursts the disk and lets the oil to
release rapidly. Relieving and bounding the pressure rise help prevent
explosive rupture of the tank and fire.

Oil level monitor device:

Transformers that
are equipped with oil conservator expansion tank are having an oil level
monitor. This monitor has two contacts for alarm.

Winding Thermometer:

It responds to
both the top-oil temperature and load current heating effect. It creates an
image of the hottest part of the winding. The top-oil temperature is measured
with a same method i.e. oil level monitoring device.

These are the
devices used by manufacturers of distribution transformers India to protect their transformers. Experts are already using
these devices to provide protected transformer equipment's to their clients. If
you want any, ask experts today.

Tuesday, 6 September 2016

The construction of a transformer relies on the way the primary and
secondary windings are wound around the central laminated steel core. In this
article, transformers manufacturers India will brief about different phases or
processes involved in the construction of a transformer. The two common and
widely accepted designs of transformer construction are the shell core
transformer and closed-core transformer.

In the closed core model, the primary and secondary windings are wound
outside and surround the core ring. In shell core model, the primary and
secondary windings pass inside the steel magnetic circuit which develops a
shell around the windings.

In both the designs, the magnetic flux that links the primary and
secondary windings travels completely within the core with no loss of magnetic
flux through air.

Transformer lamination

You may think that how the primary and secondary windings are wound
across laminated steel or iron cores for such type of transformer construction.
The coils are initially wound on a former which has a cylindrical, oval, or
rectangular type cross section to suit the construction of the laminated core.

These individual laminations are compactly butted together when
transformer is manufactured to reduce the reluctance of the air gap at the
joints, which generate a highly saturated magnetic flux density.

Winding arrangements of a transformer

Transformer windings create another critical transformer construction
part as they are the major current-carrying conductors that are wound across
the laminated sections of the core.

In a single phase two winding transformer, the one winding is
connected to the voltage source and develops a magnetic flux. This winding is
primary one. Another one is secondary winding in which a voltage is induced as
a result of mutual induction.

If the secondary output voltage is lower than the primary input
voltage, the transformer model type is step down transformer. However, if it is
opposite, i.e. if the secondary voltage is more than primary input voltage, it
is step up transformer.

Transformer manufacturers are making these two common models for
industrial and residential clients. You can get even custom made models as per
your requirement from transformers manufacturers India. For more updates,
connect to Royal Transformers and avail detailed knowledge on transformers and
their components.

Feedback for this post is pen. We welcome critics and reviewers who
share their genuine thoughts regarding the article post.

Tuesday, 9 August 2016

Explosion of transformer causes a power outage. Manufacturers of power transformers India say that the transformers do go down, but when they start
putting impact on campus operations, things get worse immediately. Besides the
lost continuity of classroom instruction, the risk of security lapses,
subsequent fires, fines, and lawsuits can increase the damages by four times.

How to recognize a robust
transformer?

Engineers are trying harder to avail an asset that will offer cost
effective and long lived service with a basic know-how of the construction,
design, and materials of power transformer.

Common power transformers used at campuses are liquid filled models.
Liquid filled transformers use oil or coolant for absorbing heat. Other type is
dry type transformer. Dry type model is air cooled and so, there are fewer chances
of leakage and fire risk.

It hardly matters if the transformer is wet or dry. Robustness is
determined by the way the coils are wound around the transformer core.

The material used by manufacturers for the windings is the best
quality copper, which is superior conductor to aluminium as copper provides
less resistance and less heat. Moreover, aluminium corrodes that creates heat
and lower the life of the transformer while posing a fire hazard.

Even the insulation has significant impact on reliability. Transformer
(dry type) temperatures can reach 200 degrees C on daily basis, so neglecting
insulation part can be a disastrous thing to do.

How remanufacturing (restoring)
is a cost saving decision?

The idea to purchase a restored transformer or refurbished transformer
is a cost saving one. There are manufacturers that sell refurbished transformer
and its spares to their clients at lower price. A brand new transformer is
costly and not every person can afford it. So, for such clientele,
manufacturers have brought refurbished range of transformers. These are
restored versions of original transformers, which are repaired by professionals
using latest technology and tools.

Refurbished or restored transformers are not corroded ones. These are
somehow failed at operation mode and due to unavailability of spare, users sell
them at low price. These sold transformers are restored in good condition by
replacing the corroded or broken spares with brand new spares.

Some stores are the answer to your emergency situations when you are
unable to get a component for your transformer. You can contact restoring
stores that sell refurbished transformers. They do have some spares that you
can avail at really cheap prices.

Royal transformers manufacturers are suppliers of power transformers India. You can contact their experts and avail best model for your site. For
details, kindly visit their official website. Don’t forget to share the reviews
about this story.

Tuesday, 2 August 2016

Rectifier maintenance involves
master practice and thus, such transformer spares maintenance is not easy as before. Modern range of rectifiers are
filled with electronic and sophisticated controls, programmable logic
controllers, power conversion devices, control equipment, and cooling systems.
To acquire a durable product, manufacturers make quality investment with several
hours of engineering, R & D, testing and maintenance practice. In order to
perform proper maintenance practice, one should have good understanding of the
type of rectifier system, type of control, hazards, and safety precautions.

Rectifier control types used in
the metal finishing industry are separated in following types and are available
in three phase and single phase power configurations.

No control – Such type of
rectifier offers limited output control and regulation. No control rectifier is
used at location where a single level of voltage is needed with limited
regulation.

Thyristor /SCR control

This is the most common type of
control used in modern metal finishing shop, where automatic control and/ or
remote operation are required. The SCR or thyristor is a solid semiconductor
device that acts as a switch, conducting when they are forward biased.

Transformer manufacturing
companies configure SCRs with one of two typologies for offering either primary
or secondary control rectifier control.

SMPS or Switchmode Power Supplies

Switchmode technology has been
used in smaller applications; however, since past 10 years, industry is able to
manufacture large components to allow power ratings for the metal finishing
industry. The manufacturers design these supplies in solid-state and
incorporate a high speed switching regulator.

The switch is either on or off.

Since the cost of copper
increased, these power supplies are cost effective due to the reduced copper
content. This technology provides inherent low loss conversion from AC to DC. Transformer
manufacturers are making these power supplies in ranges up to 10,000 amps in a
small, efficient, and reliable package.

Chopper

Chopper technology is the recent
one used by manufacturers for transformer applications to convert AC to DC.
This technology is used in large high current systems.

All these transformer spare parts
are readily available at manufacturing unit. You can browse some manufacturers
of transformer parts nearby your area and source some good reliable pieces from
them. Royal transformer manufacturers are among leading companies that deal
into quality spares and components. They are supplying their products to
worldwide clients at best rates.

You can talk to Royal Transformer
experts and get the best deal for yourself. There are many transformer spares available at their store. You can even explore
their offerings online by visiting their official website.

Feedback this story and share
your thoughts with other readers. Thanks again for visiting this blog.

Tuesday, 22 March 2016

Are distribution transformers offered by Indian suppliers most efficient to use?

There was a time when industries encountered sudden failures and limited life expectancy for transformers. But today, distribution transformers in India are made with better grade materials and optimum design that reduce the cost of maintenance and enhance the life of the transformer.

A transformer converts power electricity from once circuit to another in same frequency. In this conversion process, transformer can raise or lower the voltage with corresponding decrease or increase in current. Transformers acquire this with mutual induction between the two circuits connected by a similar magnetic flux in its core.

Highlight the facts about transformer invention

Invented in 1886, transformers now act as a backbone of AC transmission, distribution and use of electrical energy. Manufacturers offer from radio frequency transformers to industrial transformers as per the request of the customer.

Importance of transformers

Transformers are critical equipment in power distribution network. These are second large loss making devices after transmission lines in electricity networks. Transformer failure causes sudden outage in the power supply. Transformers are intended to lower the greenhouse gas emissions, enhance reliability and provide longer service life to industrial applications.

How to reduce the cost of energy losses?

Manufacturers of distribution transformers reduce the cost of energy losses by enhancing the transformer efficiency. They also started using high grade materials and optimum design that help them in reducing the cost of maintenance and enhancing the life of the transformers.

Distribution transformers are special and important as these are the equipment through which each electricity unit consumed by the end user has to be delivered.

Reasons behind losses in transformers –

Loose connection at the bushings

High no-load losses

Bend in jumpers

High copper losses

Losses in service cables and connections are happened due to short size or inappropriate size of the service cables, losses in joints in the poles, missing spring washers, etc.

High efficient distribution transformers by Indian suppliers are the products to be installed for better performance and results. You can get an efficient transformer device from any reliable Indian supplier you know.

Tuesday, 16 February 2016

Is it right that India is among largest producer of reliable dry type transformers?

May be you read it before anywhere- dry type transformers in India are the most reliable machineries produced and intended by manufacturing units with the help of qualified team of engineers. The world has an avalanche of engineers that help manufacturing companies in intending the most reliable and sophisticated transformers that fit well in industrial client’s budget.

Transformers are becoming necessity for public and industries today. In almost every place where people live and work, you will see minimum one transformer. As the device keeps working and transferring power to the escalators inside the departmental store, the hotel lift, the oven in the bakery, or the petrochemical plant, nobody gives it a second thought. And most manufacturers of dry type transformers from India help their customers to use electricity in most effective way and to yield more industrial production in sustainable manner.

Why they stick to dry type technology?

There are numerous reasons to support this question. Number one is that dry type range holds maximum buyers because-

It is safe and environmental friendly device

It reduces environmental contamination

There is zero risk involved for leakage of flammable substances

The production process is environmental friendly

Non flammable and self-extinguishing capability

High capacity to support overloads

High resistance to short circuits

High resistance to vibrating conditions

Manufacturers and engineers have immense exposure in working on distinct ranges and customized projects, including-

Wind

Marine

Solar

Power plants

Railways

Utilities

Drives

Buildings

Chemical and pharmaceutical

Metal and mining

Oil and gas

Pulp and paper

Cement

Water

Nuclear

Infrastructure

More

They leverage on latest technology and most demanding control systems in order to guarantee maximum production quality and comprehensive product reliability. Companies like Royal Transformers are offering best dry type transformers across India and overseas. You must take a look at their products and source the premium range of transformers at affordable rates.

Monday, 13 July 2015

Transformers are integral parts of the
industries. The basic designs are having liquid filled transformer and dry type
transformers in India. In this article, experts will explain dry type
transformers. They will also make you learn about the reasons why chemical and
oil refineries are mostly sourcing dry type transformers from manufacturers in
India. Read further to know more about the benefits of using dry transformers.

Dry type transformers in Indiaare ideal and most suitable systems for locations where old oil filled transformers cause insecurity issues. There are several industrial locations where dry transformer model works best, such as oil refineries, chemical industry, marine applications, and more other localities where safety is a major concern of all.